Results 81 to 90 of about 160,813 (191)

Determinação espectrofotométrica de cefalexina em formulações farmacêuticas explorando a sua reação de transferência de carga com a quinalizarina Spectrophotometric determination of cephalexin in pharmaceutical formulations exploring its charge transfer reaction with quinalizarin

open access: yesQuímica Nova, 2010
This work proposes a new simple and fast spectrophotometric method for cephalexin determination in pharmaceutical formulations. The method is based on the charge transfer reaction between cephalexin and quinalizarin in dimethylsulfoxide medium.
Carlos Eduardo R. de Paula   +2 more
doaj   +1 more source

Pure All-trans Vitamin A Acetate and the Assessment of Vitamin A Potency by Spectrophotometry [PDF]

open access: bronze, 1951
J. Boldingh   +9 more
openalex   +1 more source

Exoplanet Research with the Stratospheric Observatory for Infrared Astronomy (SOFIA)

open access: yes, 2017
When the Stratospheric Observatory for Infrared Astronomy (SOFIA) was conceived and its first science cases defined, exoplanets had not been detected. Later studies, however, showed that optical and near-infrared photometric and spectrophotometric follow-
B Placek   +19 more
core   +1 more source

Investigation antiradical and antioxidative action dezapur in experements in vitro

open access: yesJournal of Education, Health and Sport, 2016
Volkovoy V. A., Sevrukov O. V., Bereznykova M. E., Reshetniyk N. V., Fomina G. P., Karabut L. V. Investigation antiradical and antioxidative action dezapur in experements in vitro. Journal of Education, Health and Sport. 2016;6(6):291-299.
V. A. Volkovoy   +5 more
doaj  

Quantitation of genistein and genistin in soy dry extracts by UV-Visible spectrophotometric method</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>Química Nova</i>, 2008 </span><br><span class="r_content">This paper describes the development and validation of an UV-Visible spectrophotometric method for quantitation of genistein and genistin in soy dry extracts, after reaction with aluminum chloride.</span><br><span class="r_sub"><i>Isabela da Costa César<span id="ma_5" style="display:none">, Fernão Castro Braga, Cristina Duarte Vianna-Soares, Elzíria de Aguiar Nunan, Gérson Antônio Pianetti, Ligia Maria Moreira-Campos</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_5')">+5 more</a></small></i></span><br><small><a href="https://doaj.org/article/9d01b5a6019342148acca54515f159a4" target="_blank" rel="nofollow" title="doaj.org/article/9d01b5a6019342148acca54515f159a4">doaj</a> </small>   <div id="more_5" style="display:none"><a href="/sci_redir.php?doi=10.1590%2FS0100-40422008000800003" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.1590/S0100-40422008000800003'); alert('Copied the doi');">copy doi</a> <small>(10.1590/S0100-40422008000800003)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_5')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="https://core.ac.uk/download/pdf/42868817.pdf" target="_blank" rel="nofollow">Spectrophotometry of Michigan-Tololo quasars</a> <b><a href="https://core.ac.uk/download/pdf/42868817.pdf" target="_blank" rel="nofollow">[PDF]</a></b> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"></span><br><span class="r_content">Emission-line quasar characteristics are confirmed for 80% of the objects observed, including at least four new quasars with spectral features indicative of supernova-like outflow.</span><br><span class="r_sub"><i>Lewis, D. W.<span id="ma_6" style="display:none">, Macalpine, G. M., Weedman, D. W.</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_6')">+2 more</a></small></i></span><br><small><a href="https://core.ac.uk/works/24908788" target="_blank" rel="nofollow" title="core.ac.uk/works/24908788">core</a> </small>   <div id="more_6" style="display:none"><a href="http://hdl.handle.net/2060/19790021950" target="_blank" rel="nofollow" title="hdl.handle.net/2060/19790021950">hdl.handle.net</a><br> </div><small><a href="#" onClick="return toggle_div(this, 'more_6')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="https://core.ac.uk/download/pdf/10276089.pdf" target="_blank" rel="nofollow">A comparison of two methods of measuring particle size of Al2O3 produced by a small rocket motor</a> <b><a href="https://core.ac.uk/download/pdf/10276089.pdf" target="_blank" rel="nofollow">[PDF]</a></b> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16">, 1969 </span><br><span class="r_content">The size of aluminum oxide particles produced by small rocket motors is determined by tank collection and spectrophotometry. The size of the particulate determines loss in thrust due to particle lag, particulate radiant heat transfer, acoustic ...</span><br><span class="r_sub"><i>Dobbins, R. A., Strand, L. D.</i></span><br><small><a href="https://core.ac.uk/works/4468227" target="_blank" rel="nofollow" title="core.ac.uk/works/4468227">core</a> </small>   <div id="more_7" style="display:none"><a href="http://hdl.handle.net/2060/19690000535" target="_blank" rel="nofollow" title="hdl.handle.net/2060/19690000535">hdl.handle.net</a><br> </div><small><a href="#" onClick="return toggle_div(this, 'more_7')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.1086/656425" target="_blank" rel="nofollow">The Spectrum of the Night Sky Over Kitt Peak: Changes Over Two Decades</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16">, 2010 </span><br><span class="r_content">New absolute spectrophotometry of the Kitt Peak night sky has been obtained in 2009/10, which we compare to previously published data obtained in 1988 and 1999, allowing us to look for changes over the past two decades.</span><br><span class="r_sub"><i>Massey, Philip, Neugent, Kathryn F</i></span><br><small><a href="https://core.ac.uk/works/711590" target="_blank" rel="nofollow" title="core.ac.uk/works/711590">core</a> </small>   <div id="more_8" style="display:none"><a href="/sci_redir.php?doi=10.1086%2F656425" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.1086/656425'); alert('Copied the doi');">copy doi</a> <small>(10.1086/656425)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_8')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="https://core.ac.uk/download/pdf/42830703.pdf" target="_blank" rel="nofollow">Use of optical fibers in spectrophotometry</a> <b><a href="https://core.ac.uk/download/pdf/42830703.pdf" target="_blank" rel="nofollow">[PDF]</a></b> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"></span><br><span class="r_content">The use of single or small numbers of fiber optic fibers in astronomical spectroscopy with the goal of greater spectrophotometric and radial velocity accuracy is discussed.</span><br><span class="r_sub"><i>Ramsey, Lawrence W.</i></span><br><small><a href="https://core.ac.uk/works/24877737" target="_blank" rel="nofollow" title="core.ac.uk/works/24877737">core</a> </small>   <div id="more_9" style="display:none"><a href="http://hdl.handle.net/2060/19890003954" target="_blank" rel="nofollow" title="hdl.handle.net/2060/19890003954">hdl.handle.net</a><br> </div><small><a href="#" onClick="return toggle_div(this, 'more_9')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.1093/mnras/88.7.536" target="_blank" rel="nofollow">Spectrophotometry of the Chromosphere.: (Plates 7, 8, 9.)</a> <b><a href="https://academic.oup.com/mnras/article-pdf/88/7/536/3164375/mnras88-0536.pdf" target="_blank" rel="nofollow">[PDF]</a></b> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: bronze" title="open access: bronze" width="16" height="16">, 1928 </span><br><span class="r_sub"><i>Carl Davidson<span id="ma_10" style="display:none">, M. Minneart, L. S. Ornstein, F. J. M. Stratton</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_10')">+3 more</a></small></i></span><br><small><a href="https://openalex.org/W2321066442" target="_blank" rel="nofollow" title="openalex.org/W2321066442">openalex</a> </small>   <div id="more_10" style="display:none"><a href="/sci_redir.php?doi=10.1093%2Fmnras%2F88.7.536" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.1093/mnras/88.7.536'); alert('Copied the doi');">copy doi</a> <small>(10.1093/mnras/88.7.536)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_10')">+1 more source</a></small><br></div><div class="r"><div style="margin-bottom:2px;overflow:hidden"><div style="display: inline-block; float: left; font-size: small; padding-right: 16px; margin-top: -1px; padding-bottom: 1px;"><a href="/q-chromatography/" class="suggestion"onclick="show_loader();"><b>chromatography</b></a><br/><a href="/q-chemistry/" class="suggestion"onclick="show_loader();"><b>chemistry</b></a><br/><a href="/q-physics/" class="suggestion"onclick="show_loader();"><b>physics</b></a><br/></div><div style="display: inline-block; float: left; font-size: small; padding-right: 16px; margin-top: -1px; padding-bottom: 1px;"><a href="/q-optics/" class="suggestion"onclick="show_loader();"><b>optics</b></a><br/><a href="/q-organic_chemistry/" class="suggestion"onclick="show_loader();"><b>organic chemistry</b></a><br/><a href="/q-materials_science/" class="suggestion"onclick="show_loader();"><b>materials science</b></a><br/></div><div style="display: inline-block; float: left; font-size: small; padding-right: 16px; margin-top: -1px; padding-bottom: 1px;"><a href="/q-absorption_acoustics/" class="suggestion"onclick="show_loader();"><b>absorption acoustics</b></a><br/><a href="/q-infrared_spectrophotometry/" class="suggestion"onclick="show_loader();"><b>infrared spectrophotometry</b></a><br/><a href="/q-infrared/" class="suggestion"onclick="show_loader();"><b>infrared</b></a><br/></div></div></div><div class="pagenav"><a href="/q-spectrophotometry/p-8/" rel="nofollow"><b>previous</b></a>   <a href="/q-spectrophotometry/p-7/" rel="nofollow">7</a>  <a href="/q-spectrophotometry/p-8/" rel="nofollow">8</a>  <b>9</b>  <a href="/q-spectrophotometry/p-10/" rel="nofollow">10</a>  <a href="/q-spectrophotometry/p-11/" rel="nofollow">11</a>   <a href="/q-spectrophotometry/p-10/" id="next" rel="nofollow"><b>next</b></a> </div><br></div> </div> <script>document.getElementById('loadingGif').style.display='none';</script><div style="width: 100%; height: 40px; bottom: 0px; background-color: #f5f5f5;"><div style="padding-left: 15px; padding-top: 10px"> <a href="/" rel="nofollow">Home</a> - <a href="/page-about/" rel="nofollow">About</a> - <a href="/page-disclaimer/" rel="nofollow">Disclaimer</a> - <a href="/page-privacy/" rel="nofollow">Privacy</a> </div></div> <link rel="stylesheet" href="//ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/themes/smoothness/jquery-ui.min.css"/> </body> </html>